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1 // Copyright 2015 the V8 project authors. All rights reserved. | 1 // Copyright 2015 the V8 project authors. All rights reserved. |
2 // Use of this source code is governed by a BSD-style license that can be | 2 // Use of this source code is governed by a BSD-style license that can be |
3 // found in the LICENSE file. | 3 // found in the LICENSE file. |
4 | 4 |
5 var typedArrayConstructors = [ | 5 var typedArrayConstructors = [ |
6 Uint8Array, | 6 Uint8Array, |
7 Int8Array, | 7 Int8Array, |
8 Uint16Array, | 8 Uint16Array, |
9 Int16Array, | 9 Int16Array, |
10 Uint32Array, | 10 Uint32Array, |
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61 constructor.prototype.slice.call([], 0, 0); | 61 constructor.prototype.slice.call([], 0, 0); |
62 }, TypeError); | 62 }, TypeError); |
63 | 63 |
64 // Check that elements are copied properly in slice | 64 // Check that elements are copied properly in slice |
65 array = new constructor([1, 2, 3, 4]); | 65 array = new constructor([1, 2, 3, 4]); |
66 var slice = array.slice(1, 3); | 66 var slice = array.slice(1, 3); |
67 assertEquals(2, slice.length); | 67 assertEquals(2, slice.length); |
68 assertEquals(2, slice[0]); | 68 assertEquals(2, slice[0]); |
69 assertEquals(3, slice[1]); | 69 assertEquals(3, slice[1]); |
70 assertTrue(slice instanceof constructor); | 70 assertTrue(slice instanceof constructor); |
| 71 |
| 72 // Check that the species array must be a typed array |
| 73 class MyTypedArray extends constructor { |
| 74 static get[Symbol.species]() { |
| 75 return Array; |
| 76 } |
| 77 } |
| 78 var arr = new MyTypedArray([-1.0, 0, 1.1, 255, 256]); |
| 79 assertThrows(() => arr.slice(), TypeError); |
71 } | 80 } |
| 81 |
| 82 // Check that the result array is properly created by checking species |
| 83 for (var constructor1 of typedArrayConstructors) { |
| 84 for (var constructor2 of typedArrayConstructors) { |
| 85 class MyTypedArray2 extends constructor1 { |
| 86 static get[Symbol.species]() { |
| 87 return constructor2; |
| 88 } |
| 89 } |
| 90 var arr = new MyTypedArray2([-1.0, 0, 1.1, 255, 256]); |
| 91 var arr2 = new constructor1([-1.0, 0, 1.1, 255, 256]); |
| 92 assertEquals(new constructor2(arr2), arr.slice(), |
| 93 constructor1.name + ' -> ' + constructor2.name); |
| 94 } |
| 95 } |
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